Caliper gauge



Dec, 2, 1924.

V. T. JULIN CALIPER GAUGE Filed July 8, 1919 VICTOR TEODOR JULIN,

OF LIDINGON, SWEDEN.

CALIPER GAUGE.

Application filed July 8,

To all whom it may concern:

Be it known that I, VICTOR TEODOR JULIN, 1

residing at Skarsatra, Lidingon, Sweden, have invented certain new anduseful Improvements in Caliper Gauges, of which the following is aspecification.

The present invention refers to a caliper gauge of the type in which themeasurement is made between anvils on the legs of a frame.

The invention has for its object to establish a sure and rapidadjustment of said anvils.

In the accompanying drawings Fig. 1 is a side view of the caliper gaugepartly in section, Fig. 2 is a side view of an inside caliper gauge, andFig. 3 illustrates in side view partly in section a modifiedconstruction.

In Fig. 1, 1 indicates the usual frame, on the one leg of which twotolerance anvils 2, 3 are provided. According to the invention thesetolerance anvils are mounted eccentrically on a shaft 4, which can berotated by means of a head 5 or the like, and be locked in position by asuitable locking device of any known construction. If required only oneof the tolerance anvils 2, 3 may be eccentrically mounted on the shaft4. The anvils 2 and 3 are made fast on shaft 4 in any convenient way soas to turn therewith, the degree of eccentricity and the position towhich said shaft is turned on its axis determining the intervals betweenthem and the measure anvil 8. Thus if the shaft be turned till the mosteccentric part of the periphery of anvil 2 or 3 is presented oppositemeasuring anvil 8 the interval will be least, and any other position ofthe anvil will be proportionately greater. The same is true of bothanvils 2 and 3, as is shown, both being eccentric and correspondinglyarranged on the shaft 4. The head 5, as shown, consists of a hollowmilled cap,pinned to the outer end of shaft 4 and containing a helicalspring 17 which bears inwardly against disc 18, mounted on said shaftand fitting into a corresponding recess in the proximate end of the partof frame 1 which serves as a bearing for shaft 4. This disc ispreferably free on shaft 4. Said spring 17 will take up any jar incidentto operation. It is not, however, indispensable, nor is the form ofhead. As above indicated, any ordinary head or equivalent means may besubstituted for it without affecting the subject matter claimed. The ec-1919. Serial No. 309,498.

centricity of the anvils 2 and 3, or one of them, need be but slight.

In the opposite leg of frame 1 a micrometer screw 7 is provided, on theend of which a measure anvil 8 is mounted, which by means of the screwcan be carefully adjusted towards the tolerance anvils 2, 3.

By rotating the shaft 4 it is possible to amend the tolerance which isdetermined by the tolerance anvils 2, 3. j

In Fig. 2, 2 and 3 are the tolerance anvils, mounted on the shaft 4, 7the micrometer screw by means of which a slide or anvil 8 can beadjusted, said slide or anvil being set by means of a screw 9.

The modification illustrated in Fig. 3 sub stitutes for shaft 4 amicrometer screw 16 having fixed thereon two oppositely presentedsmoothcones 10 and 11 for adjusting tolerance anvils 2 and 3 bored conicallyto receive them. These anvils are slidably arranged in recesses of frame1 and are forced to the left, as viewed in Fig. 3, in contact with theright hand side of the cones 10, 11 by means of springs 12, 13,surrounding the outer part 2, 3 of the anvils and inserted between theinner wall of the recess of the frame 1, in which the anvils are placed,and an outer flange 12*, 13 on the anvils. On turning the screw 16 inone direction the cones 10, 11 are moved longitudinally, so that theanvil 2 is moved by the action of spring 12 from the anvil 8 whereassimultaneously the other anvil 3 is advanced towards its opposite anvil8 by the action of the cone 11. By turning the screw 16 in the oppositedirection of the cones 10, 11 are moved longitudinally in the oppositedirection, so that the anvil 3 is moved by the same cone 10 toward theanvil 8 In this modification the anvils 2 and 3 do not turn and ofcourse need not be eccentric.

The opposite leg of frame 1 carries a micrometer screw 7, by means ofwhich the anvils 8 8", opposed to the anvils 2, 3, may be adjustedsimultaneously, as by a cross piece 14, connected with the anvils 8, 8which are slidably mounted in the head 15. The cross piece 14 isswivelled at its middle to the end of the micrometer screw 7 by anyconvenient means of attachment, as for example a clamping nut 19 turnedhome on a reduced terminal part of said screw, which part passes throughsaid cross piece. As the latter moves inward and outward with the screw7 and the anvils 8 and 8 are carried new by said cross piece the twoanvils must -be equally advanced toward or withdrawn from the toleranceanvils 2 and 3 by turning the screw 7 in one direction or the other.

By means of the device described it is possible to adjust the anvils 2,3 for the tolerance required and to adjust the anvils 8 ,8" for "themeasure required. The connection between the anvil 8 and the micrometerscrew in Fig. 2 is the same as in Fig. 3 and, therefore, need not befurther described.

"Having thus described my invention, what I claim and desireto protectby Letters Patent is:

1. ln combination in a gauge, a frame having two legs, a shaft rotatablymounted in one of said legs, two tolerance anvils mounted on andoperable by said-shaft, a micrometer screw mounted on the other leg, anda measuring anvil carried by said micrometer screw and cooperating withsaid tolerance anvils.

2. A gauge comprising two tolerance anvils, an opposed measuring anvil,means for adjusting the latter anvil toward the former anvil's, a framesupporting all of said anvils and'means whereby said tolerance anfromsaid tolerance anvils.

5. A gauge comprising a rotatable shaft, a pair of tolerance anvilseccentrically mounted on said shaft to turn. therewith and measuringmeans'adjustable toward or from said tolerance anvils.

(3. A caliper gauge comprising, a frame having two legs, two toleranceanvils mounted in one leg of said frame,-a single means forsimultaneously adjusting said anvils as to tolerance, and an adjustablemeasure anvil mounted in the other leg of said frame and opposedto bothof said tolerance anvils. In testimony whereof I have signed my name tothis specification.

VICTOR TEODOR JULIN. Witnesses VVALDEMAR BoMAN, A. Brown.

